1 (7 1/4 oz.) pkg. Kraft macaroni and cheese dinner
1/2 c. chopped onion
1/4 c. chopped green pepper
1 tbsp. butter
1 can cream of celery soup
1 (6 1/2 oz.) can tuna, drained
1 (4 oz.) can mushrooms, drained

Prepare dinner as directed, except use 3/4 cup milk. Saute onion and green pepper in butter. Add remaining ingredients; mix lightly. Heat thoroughly, stirring occasionally.

Makes 6 servings.